Question

Explain how does the exchange of gases occur in plants across the surface of stems, roots and leaves

answer in french language ​

Answer 1

Chez les plantes, il existe de minuscules pores appelés stomates sur les feuilles et des lenticelles dans la tige qui facilitent l’échange de gaz. Le dioxyde de carbone est absorbé et de l'oxygène est libéré {pendant la photosynthèse} et vice-versa pendant la respiration.

Answer 2

The carbon dioxide required by the plant is obtained through tiny pores present on the surface of the leaves called stomata. Note that the exchange of gases occurs across the surface of stems, roots and leaves as well. Water used in photosynthesis is taken up from the soil by the roots in terrestrial plants.